Do not use it over direct heat or for heating dishes. / Do not use in an oven, toaster oven, or microwave oven. / Keep it away from flame, heat source, and IH cooking heater. The sheet may burn or catch fire. / If stored in a humid or steamy place, the color may change due to oxidation. / If you put high-acid or high-salt foods such as Umeboshi (pickled plum), Miso (fermented soybean paste) and Shoyu (soy sauce) on the aluminum foil pan for a long time, they may damage the aluminum foil and dissolve it. / If you wrap a hot rice ball, the sheet may look discolored. This is because inside of the foil is discolored by the steam; it does not affect the food product. / Be careful not to hurt your hands or fingers.Keep away from fire and other sources of heat.Do not use this product for purposes other than its intended purposes.